Guiding principle (5)
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">guiding principle</span>' is the definition.<br/ ><span class="explanation-format__explanation">(I've seen this in another clue)</span><br/ ><br/ >This is the entire clue.<br/ ></span>
(Other definitions for tenet that I've seen before include "A belief or credo - it's a palindrome" , "Fundamental belief" , "Doctrine, dogma, belief" , "A belief or creed - a palindrome" , "Opinion held to be true" .)
(Other definitions for ethic that I've seen before include "Code of principles" , "Ideology" , "Set of moral principles" , "set of morals" , "System of rules of behaviour" .)
(Other definitions for precept that I've seen before include "Rule of conduct or doctrine" , "Moral rule" , "order for payment of rate" , "Canon" , "Rubric" .)